Schmidt D, Lutz F
SSO Schweiz Monatsschr Zahnheilkd. 1977 Aug;87(8):705-11.
The advantages and disadvantages of composite materials when used in direct core restoration of endodontically treated teeth is discussed. With the aid of dye penetration tests and scanning electron microscopy, in vitro fabrication of gold and amalgam cores were compared to those of 3 different composite core techniques. A compression technique used in the application of composite to the Radix -anchor post was judged successful. Neither modification of preparation nor application of a sealer before composite insertion improved margin adaptation or reduced microleakage of restoration margins. Acid etching of dentin definitely decreased marginal quality; therefore, for core construction using composites, the acid etch technique is not indicated. The proper use of composites is superior to gold and comparable to amalgam in core fabrication of endodontically treated teeth, when evaluating marginal adaptation and the reduction of microleakage at the composite-dentin interface.
本文讨论了复合材料用于牙髓治疗后牙齿直接核修复的优缺点。借助染料渗透试验和扫描电子显微镜，对金核和汞合金核的体外制作与3种不同复合材料核技术的体外制作进行了比较。一种用于将复合材料应用于根管桩的加压技术被判定为成功。在插入复合材料之前，无论是对预备体进行修改还是应用封闭剂，均未改善边缘适应性或减少修复体边缘的微渗漏。牙本质酸蚀肯定会降低边缘质量；因此，在使用复合材料进行核构建时，不建议采用酸蚀技术。在评估边缘适应性以及复合材料与牙本质界面处微渗漏的减少情况时，正确使用复合材料在牙髓治疗后牙齿的核制作方面优于金，与汞合金相当。
